名校
1 . 如图,正方形
所在平面与平面四边形
所在平面互相垂直,
是等腰直角三角形,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/64996535-6406-42e7-a594-0e107e90164e.png?resizew=176)
(1)设线段
的中点分别为
,求证:
平面
;
(2)求二面角
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3814287dbb60d478bffc5366f9928b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a277db452e76240ec83ec6a2864bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af8bfe298fb2948547723517cd2ec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb39f38f7cfc3dabd6931c9b76205aa7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/64996535-6406-42e7-a594-0e107e90164e.png?resizew=176)
(1)设线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dc9e9e855fae6e82d93972ff611283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0497a2b843caeaeb1825e33c5819d84e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e076c4c39e0591ed69ff780fb5a1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b123303738a595ec0126beb0fa64a8.png)
您最近一年使用:0次
2020-04-25更新
|
411次组卷
|
4卷引用:安徽省合肥市一六八中学2019-2020学年高二上学期期中数学(理)试题
安徽省合肥市一六八中学2019-2020学年高二上学期期中数学(理)试题(已下线)第十一章 立体几何初步 本章小结浙江省杭州高级中学2021-2022学年高二上学期期中数学试题(已下线)【新教材精创】11.5综合复习习题课(2)练习(1)
名校
2 . 如图,四棱锥
的底面为直角梯形,
,
,
,
,平面
平面
,二面角
的大小为
,
,
为线段
的中点,
为线段
上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/37181330-3379-4783-880a-2d639a003ae1.png?resizew=204)
(1)求证:平面
平面
;
(2)是否存在点
,使二面角
的大小为
,若存在,求
的值,不存在说出理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af620f6d204d310d8e3f267fdd6c3f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6aa8317efcb33660a196ec3538ca66c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d1553f6806c1eee3b17b94d23f0f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4155f313a2a5b634f83de8a6b1f1596d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8427b837e40706c5e436accbd90b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/37181330-3379-4783-880a-2d639a003ae1.png?resizew=204)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6e6192cf24ada791c26c2d6d434069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
(2)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/496eefb185e0ed09af5655772958ae9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89fa29225a47f983fcfdafc6c44ef7e.png)
您最近一年使用:0次
2020-03-25更新
|
1019次组卷
|
3卷引用:安徽省黄山市屯溪第一中学2020-2021学年高二上学期期中数学试题
名校
解题方法
3 . 如图1,矩形
中,
,
,
、
分别为
、
边上的点,且
,
,将
沿
折起至
位置(如图2所示)连结
、
,其中
.
![](https://img.xkw.com/dksih/QBM/2020/2/20/2403306018299904/2404659340869632/STEM/9da0614474004042b1daeea8c29009ca.png?resizew=472)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6370d6c626bdabf1fc694501ee6c714f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64e0206b1814c35cc96bd2b6b12239a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e8c3cf4bbfa6e00d38761560ddc6b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1742b04f56cd6b3c956b4607ebb880f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ddf4d708c829ece5bef03f0d9517df8.png)
![](https://img.xkw.com/dksih/QBM/2020/2/20/2403306018299904/2404659340869632/STEM/9da0614474004042b1daeea8c29009ca.png?resizew=472)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce49710609f7bffc36441dc5c2f7c2ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c66edca50eace2fad71ef59d73c662.png)
您最近一年使用:0次
2020-02-22更新
|
570次组卷
|
2卷引用:安徽省合肥市庐阳区第一中学2019-2020学年高二上学期期中数学(理)试题
解题方法
4 . 如图,四边形
是平行四边形,
,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/5d4577c2-339a-4db5-bc88-408bf079e611.png?resizew=170)
(1)求证:平面
平面
;
(2)求直线
与平面
所成角的正弦值.
(3)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41d3f7d55fcbaebc4e2450ac63a3dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61684617e0c137f27903c2047725a9bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9e716ca556082406c04f9e55c16536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8164432b13bdfcd05df7dacac832b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/5d4577c2-339a-4db5-bc88-408bf079e611.png?resizew=170)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f5ba965420dfd5aa4da211682df096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41861a8201bf8378a05a09ae0bd84635.png)
您最近一年使用:0次
名校
5 . 如图,在直角梯形
中,
,
,
,
,
,
在线段
上,
是线段
的中点,沿
把平面
折起到平面
的位置,使
平面
,则下列命题正确的编号为______ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/94cecb6f-8ec4-4d72-a046-3c179a10a799.png?resizew=187)
①二面角
的余弦值为
;
②设折起后几何体的棱
的中点
,则
平面
;
③
;
④四棱锥
的内切球的表面积为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f51f98cd42fdc224bbb0fdf7735706f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1237b95b58bd7818ebf640c3231535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a5e26777d63a3ac58a78b50c737a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6762f274ae50fce473be79e31d5ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49437f474e5805688dff21ded2d1fd7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/94cecb6f-8ec4-4d72-a046-3c179a10a799.png?resizew=187)
①二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d9f756419912dd298a0d6857130c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
②设折起后几何体的棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf12905647aeeded72bbca21a63f319.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf99042898475835bc17ed03fd7a69d.png)
④四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9609625b502348556ff8ba32deac8caa.png)
您最近一年使用:0次
2019-12-12更新
|
449次组卷
|
4卷引用:安徽省芜湖市第一中学2019-2020学年高二上学期期中考试数学(理)试题
安徽省芜湖市第一中学2019-2020学年高二上学期期中考试数学(理)试题四川省内江市第六中学2020-2021学年高二上学期第三次月考数学理科试题四川省内江市第六中学2020-2021学年高二上学期第三次月考数学文科试题(已下线)第三章 折叠、旋转与展开 专题三 球与翻折 微点3 球与翻折综合训练
6 . 已知矩形
中,
,
,沿对角线
将
折起至
,使得二面角
为
,连结
.
(1)求证:平面
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f8f01137e92c0f2e63467036ae9cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f221c6eff7ed25794b7fe387bee22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf29d07c3751c41ab3503065a5a5052e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260200d547998bcac50a4a491382e7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/a39275d1-8ab1-4cbb-a448-362590507407.png?resizew=335)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a4bddf1ea3c5d37f2233a4821909e9.png)
您最近一年使用:0次
2019-11-20更新
|
445次组卷
|
2卷引用:安徽省蚌埠市第二中学2019-2020学年高二上学期期中数学(理)试题
7 . 把边长为2的正
沿
边上的高线
折成直二面角,则点
到
的距离是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-10-29更新
|
231次组卷
|
3卷引用:安徽省示范高中2019-2020学年高二上学期第二次考试数学试题
8 . 如图,在四棱柱
中,底面ABCD为菱形,
平面ABCD,AC与BD交于点O,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/28e5b4b4-1249-40ff-87d9-42a657fa4df4.png?resizew=172)
(1)证明:平面
平面
;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c93e0118c7f28ff0a2f7074745cb8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1192b3111a6dad01bba5227472bb4072.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/28e5b4b4-1249-40ff-87d9-42a657fa4df4.png?resizew=172)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0fbd88fdb064072eedd136e9cb41ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0218542daefa15910d5111b27e71f5b3.png)
您最近一年使用:0次
2019-09-30更新
|
379次组卷
|
2卷引用:安徽省芜湖市第二中学2023-2024学年高二上学期入学评价数学试题
名校
解题方法
9 . 四棱锥A-BCDE中,底面BCDE为矩形,侧面ABC
底面BCDE,BC=2,CD=
,AB=AC
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/3dd1a2a5-51fe-41a1-94e0-a573ee07bce6.png?resizew=172)
(1)证明
.
(2)设侧面ABC为等边三角形,求二面角C-AD-E的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/3dd1a2a5-51fe-41a1-94e0-a573ee07bce6.png?resizew=172)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccd5c41c921836b50f8e18abfdc5df3.png)
(2)设侧面ABC为等边三角形,求二面角C-AD-E的余弦值.
您最近一年使用:0次
2019-08-20更新
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992次组卷
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9卷引用:安徽省合肥市第五中学2020-2021学年高二上学期期中理科数学试题
安徽省合肥市第五中学2020-2021学年高二上学期期中理科数学试题新疆乌鲁木齐市第四中学2018-2019学年高二下学期期中考试数学(理)试题重庆市广益中学校2019-2020学年高二上期期末复习数学试题湖北省武汉中学2020-2021学年高二上学期期中数学试题河北省邱县一中2020-2021学年高二上学期期末数学试题新疆乌鲁木齐市第四中学2020-2021学年高二年级下学期期中考试数学(理)试题(已下线)专题卷01 空间向量与立体几何— 章节重难点突破卷-【重难点突破】2021-2022学年高二数学上册常考题专练(人教A版2019选择性必修第一册)新疆乌鲁木齐市第四中学2021-2022学年高二下学期期中阶段考试数学(理)试题(已下线)2019年10月13日《每日一题》2020年高考理数一轮复习—— 每周一测
10 . 如图,在三棱柱
中,
、
分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/2972f0ba-1caa-460a-b43c-373613f388eb.png?resizew=194)
(1)设棱
的中点为
,证明:
平面
;
(2)若
,
,
,且平面
平面
.
(i)求三棱柱
的体积
;
(ii)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/2972f0ba-1caa-460a-b43c-373613f388eb.png?resizew=194)
(1)设棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb93967e9dfa1d65264700e20ed8a16f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49282e671435e499a78d26c7b81a711.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f3635ac9d5398fa70d10f098e875cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f68ce09db7cb705ab0a43ecf17748e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0671b4776e142e17a79af5b3f0378ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
(i)求三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
(ii)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddec22e9ff0e268ffa3522501be6506a.png)
您最近一年使用:0次
2019-10-31更新
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468次组卷
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3卷引用:安徽省芜湖市2019-2020学年高二上学期期末数学(理)试题